@article{DE_1999_35_10_a17,
     author = {L. E. Zabello},
     title = {Necessary equality-type optimality condition for delay systems with integral constraints on the control},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1429},
     publisher = {mathdoc},
     volume = {35},
     number = {10},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_10_a17/}
}